| the distribution of cyanobacteria across physical and chemical gradients in hot springs in northern thailand. | we mapped the distribution of mat forming cyanobacteria along the thermal gradient from 30 to 80 degrees c, in nine hot spring districts in northern thailand. nineteen genera and 36 species were identified by morphometric analysis. water temperature was the predominant determinant of community structure in the springs. the diversity of cyanobacterial morphotypes fell as temperature increased. water chemistry (ph, alkalinity and ammonia concentration) was a much weaker descriptor of the floral si ... | 2005 | 16329921 |